Lachlan

Lachlan may refer to:

People

 * Lachlan (name), masculine name.

Places

 * Several places in New South Wales, Australia, named for Lachlan Macquarie. For a more complete list, see Places named after Macquarie
 * Electoral district of Lachlan, an electoral district of the Legislative Assembly in New South Wales, Australia
 * Electoral district of Lachlan and Lower Darling, an electoral district of the Legislative Assembly in New South Wales, Australia
 * Lachlan River, a river in central New South Wales, Australia
 * Lachlan Shire, a local government area in the central west of New South Wales, Australia
 * Lachlan Valley Railway, a rail preservation society based at Cowra, New South Wales, Australia
 * Lachlan Valley Way, a state highway in New South Wales, Australia
 * Upper Lachlan Shire, a local government area in the state of New South Wales, Australia
 * Lachlan, Tasmania, a locality
 * Lachlan Fold Belt
 * Lachlan Island

Other

 * Clan Maclachlan, a Scottish clan which is sometimes known as Clan Lachlan
 * HMAS Lachlan (K364), a River-class frigate that served the Royal Australian Navy
 * Young Lachlan, a schooner that was stolen and wrecked by convicts in 1819